7results about How to "Simple insulation structure" patented technology

The invention discloses a manufacturing method of a stator bar of a main insulation structure with a circular inner part and a square outer part, and is suitable for the field of large-scale generator manufacturing. The stator bar is composed of a circular lead formed by twisting and transposing circular strands and a main insulator with a circular inner part and a square outer part, and a more-glue mould pressing or less-glue VPI manufacturing process is adopted. The stator bar with the main insulation structure with the round inside and the square outside has the advantages of clear principle, novel structure, convenient process and easiness in design and manufacture. The lead wire adopts a circular structure, so that the main insulation internal electric field of the stator bar can be greatly reduced, and the electrical performance and the breakdown voltage level of the stator bar are improved. The exterior of the main insulator adopts a square structure, so that the design consistency of the generator and the convenience of process wire embedding can be ensured. The stator bar with the round outside and the square inside can remarkably improve the rated voltage level of a large generator, and has great application prospects and remarkable economic and social benefits.

The invention relates to a battery cell, a battery and a battery cell manufacturing method. In the battery cell, electrode plates are stacked; the diaphragm is stacked between two adjacent electrode plates; the diaphragm and the electrode plates are wound to form a roll core; the electrode plate is provided with a tab part protruding out of the diaphragm, and the tab part is arranged on the end face of the roll core in a bent mode so as to form a tab end face on the end face of the roll core; the winding tail end of the diaphragm is provided with an extension part, and the extension part is arranged on the end face of the tab in a bending manner and covers at least part of the end face of the tab, so that the tab part is isolated from the shell, the tab part of the electrode plate is insulated, the tab part is prevented from being in contact with the shell, an extra insulating part does not need to be arranged on the tab part, and the cost is reduced. The tab insulation structure of the battery cell is simplified, the reliability of the battery cell is improved, and the manufacturing efficiency of the battery can be improved.

The utility model discloses a battery, which relates to the technical field of batteries and comprises a side frame, a fixing ring and an electrode assembly, the side frame is made of metal materials, the fixing ring is connected with the side frame and protrudes outwards from the side frame, and the fixing ring is provided with a through hole communicated with the inner side and the outer side of the side frame. The electrode assembly comprises the electrode column penetrating through the through hole and the annular insulating ring filled between the inner wall of the through hole and the electrode column, the insulating structure between the electrode column and the side frame is simpler, the number of parts is reduced, the cost is reduced, meanwhile, the part, located in the battery, of the electrode assembly is fewer, and the service life of the battery is prolonged. The occupation of the internal space of the battery is reduced, and the energy density of the battery is improved.

This utility model provides a prestressed concrete slab construction support, belonging to the field of building construction. Its technical solution includes a base and a support frame mounted on the base. The support frame includes a lower U-shaped support plate, with upper U-shaped support plates symmetrically arranged on the top of the side plates on both sides of the lower U-shaped support plate. A lower layer of transverse corrugated pipe is arranged in the lower U-shaped support plate, and upper layer of longitudinal corrugated pipe is arranged in the upper U-shaped support plates on both sides. The support frame includes an annular frame, with L-shaped support legs at the four corners of the annular frame. A protrusion is provided at the bottom of the lower U-shaped support plate, and the protrusion is located within the annular frame. The beneficial effects of this utility model are: by using an integrally molded plastic support frame, it can provide excellent insulation, preventing conductivity through the support frame, thus eliminating the need for separate grounding of the support frame. Simultaneously, it can separate the upper and lower corrugated pipes, allowing each pipe to be grounded independently, ensuring effective grounding.

The utility model relates to a cathode leading-out structure of an energy storage capacitor and a corresponding energy storage capacitor. The cathode leading-out structure comprises an integrated cathode column, an insulation sealing member, a cathode cover plate and a cathode collector sheet. A center hole is formed in the center of the cathode cover plate, the integrated cathode column penetrates through the center hole of the cathode cover plate, and the insulating sealing piece is arranged in the center hole of the cathode cover plate to insulate and separate the integrated cathode column from the cathode cover plate; the integrated negative pole comprises a pole and an adapter plate, and the pole and the adapter plate are of an integrated structure; a circular boss is arranged in the center of the upper surface of the switching disc, and a plurality of reinforcing ribs are arranged in the circumferential direction of the circular boss at intervals; the pole column is arranged on the upper surface of the circular boss of the switching disc; and the insulating sealing element is formed between the integrated negative pole and the negative pole cover plate through injection molding. The pole and the switching disc form an integrated structure, so that the assembly between the pole and the switching disc is avoided, and the connection strength between the pole and the switching disc is improved. The insulation sealing piece is formed between the integrated cathode column and the cathode cover plate through injection molding, so that the insulation structure between the integrated cathode column and the cathode cover plate is simplified, the production cost is reduced, and the assembly efficiency is improved.

The application belongs to the technical field of equipment insulation influence evaluation considering streamer discharge, and provides a streamer discharge simulation modeling method, system, medium and equipment of charge behavior under complex working condition coupling, which is based on the theory of shearing separation of double electric layer, and an oil-paper-interface multi-region charge dynamic transport simulation model is established by coupling oil flow convection term, shearing term and temperature effect; based on the established transport simulation model, the whole evolution process of streamer discharge from diffusion, longitudinal evolution to transverse migration under the coupling of electric field, fluid field and thermal field is simulated by combining the charge injection and extraction boundary conditions at the electrode, the charge density distribution and electric field strength distribution data in the streamer evolution process are obtained; the streamer evolution law is analyzed based on the charge density distribution and electric field strength distribution data, so as to evaluate the oil-paper insulation state or optimize the oil-paper insulation structure. The coupling effects of electric field, fluid field and thermal field are comprehensively considered, and the actual operating condition of the converter transformer is more accurately simulated.

The present invention relates to a modification method and a testing system for improving the flashover voltage of epoxy resin under low temperature environment, comprising the following steps: step 1, pre-treating nano SrTiO3, removing moisture, and preparing a solution required for modification; step 2, modifying the nano SrTiO3 using the solution required for modification obtained in step 1, and removing moisture from the nano SrTiO3. The present invention adds modified nano SrTiO3 particles to an epoxy resin matrix, and the prepared composite material has strong nonlinear conductivity characteristics, can effectively inhibit charge accumulation, and thus improve the flashover voltage.